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    SubjectRe: [PATCH] mm: Add new vma flag VM_LOCAL_CPU
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    On 15/05/18 17:17, Peter Zijlstra wrote:
    <>
    >>
    >> So I would love some mm guy to explain where are those bits collected?
    >
    > Depends on the architecture, some architectures only ever set bits,
    > some, like x86, clear bits again. You want to look at switch_mm().
    >
    > Basically x86 clears the bit again when we switch away from the mm and
    > have/will invalidate TLBs for it in doing so.
    >

    Ha, OK I am starting to get a picture.

    >> Which brings me to another question. How can I find from
    >> within a thread Say at the file_operations->mmap() call that the thread
    >> is indeed core-pinned. What mm_cpumask should I inspect?
    >
    > is_percpu_thread().

    Right thank you a lot Peter. this helps.

    Boaz
    > .
    >

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